Sole-molding machine



Jan. 10, 1928. 1,655,432.

A 4 H. s. MIRANDETTE soms MOLDING MACHINE Filed Fb. 3, 1912712l Fig. 1.

Patented Jan. 10, 1928. Y,

UNITED STATES. PATENT1-0FF1CE.

HORMIDAS s.. ivIfInANnnrTnoF IIAvnnrIILL,'ivriissacnusnrtrs .assIGNonToQUNITEn snon MACHINERY oonronamron, orl:enanasson',L new JERSEY, vACORPORATION NEW' JERSEY.

SoLE-MOLDING MACHINE.'

Appiieatibn ined February 3, 1927." l'serial Nofisavos.

rlhis invention relates' to machines for molding soles, and moreparticularly to 'inachines tor molding turn shoe soles, the inventionbeing herein'illustrated-in its application to means tor molding theVtoe ends onlyfof the soles. c

In the manufacture of turn shoes it is the general practice, before thesole is mounted on thev last, toperfoim thereon a rbrealing down ormolding operation whereby its margin outside of the upper-attachingshoulder, i. e., its lfeather portion,y is bent out of the planeotthesole toward the grain side, so as to facilitate the lasting and upper-sewing operations. It is customary to use principally for thisbending or molding 'operation a machine of the progressive type 'such asshown and described in United States Letters Patent No. 1,110,637,ygranted on Septemberl, 1914, upon' an application of W. C. Meyer. Sincea machine of that type cannot be used with entirely satisfactory resultsin operating` about the toe end of a sole, especially if the solle has acoinparatively narrow or pointed toe, it is ai frequent practice to moldthe toer ends of the soles in a machine of a dierent type, 'whereby theentire toe lend is 'molded at a single operation, such aV machine beingshown and described in United States Letters Patent No. 1,534,052,granted on April 21, 1925, upon an application of F. E. Beckman.Machines ot" this type comprise a lower or female mold formed with aWall or'` face oblique to the plane of a'sole therein for bending Jdiefeather out of said plane toward the grain side of the sole in responseto pressure applied on the grain side by an upper or male mold. y

Machines oli the progressive type yabove mentioned are Vso constructedas to perform the molding or l'iending operationen the margin ot thesole without any substantial con'iprcssion oi" the sole at the marginal`edge; and in the toeinolding machine it is desirable likewise to avoidany substantial compression. at thel edge of thesole, in order thatthe.. edge mayv not present a different appearance at the toe end thanat the rear ot' the toe. It has accordingly been the prac-y tice to formthe male mold of the toemold# ing machine so that it'fappliesitspressure inside of the eXtreme' marginal edg Qfthe sole. Ithas`nevertheless been found that under some conditions tlierefisv still `atendency to compress or, distort thefm'arginal edge portion in moldingthe toe.` This tend encyis especially evident in operating uponsoles'which are so rounded and channeled at the forepart that the edgetace and the face-v ot the `feather on the flesh side forni an acuteangle, ask is customary in the manufacture ot some kinds ofturn shoes.yIn' molding the toes of solesfofthat type there has sometimes resulted acompression or distortion at the marginal edge, especially at the apexot the above-mentioned acute angle,"which yis"detrimental to theappearance' ofthe yn-vv ished shoe. j

i It is an object of this invention toinsure mentioned 4in thetoe-molding operation; and to this endy the invention provides, in itsillustrative embodiment', a construction in which the female mold has,adjacent to its oblique margin-bending face, inthe plane in which thefeather of the sole ispresented to the machine', a recess insuringVample clearance for tlieedge' of the sole in the molding operation so asto prevent" com- .70 'against objectionable results such as above'` soipressing or distorting action of7 the female p mold thereon. In theconstruction herein shown the mold kis formed, asheretofore,

with a wall for engaging the 'edge .faceof the feather oi. the sole tovdetermine 4the lengthwise position of the sole and" alsoVA to centralizethek toe in the mold when the sole is presented Vto the machine bythetopera-`4 tor, the above-mentioned recess' beiing'locat-` ed betweenthe lower end of this wallof the mold'and the oblique face andbeing'somewhat narrower', in a direction perpendicwV larto theplane ofthe sole,than the width of the edge :tace of the feather of the .sole soas tofavoid interfering with the gaging action of said wall vupon thesole. Prefer ably the lower Wall of the recess, which en# tends in adirectionparallel toftlieplane of the sole, projects inwardly Ltowardthecen-V terof thev molda little farther than thel lo` cation of thevsole-ga'ging wall above the recess, so that said lower wall serves toreceive and support the outer edge portion vof the feather-'ofthe sole'when the soleis presentedto the machine.k i

'llieinvention will now be more Particip lll larly described byreference to the accom` panying drawings and pointed out in the claims.

In the drawings,

Fig. l is a view in front elevation of aV portonota sole toe moldingmachine of the type shown in the above-mentioned leelnnan patent, withthe presentinvention embodied therein;

Fig. 2 shows in perspective one of the lower or female molds;

patent, the machine comprises a support (S upon which is secured a meldblock 8 having anpair of female molds formed therein, and verticallymovable above the block 8 isa head 1() which is carried by a plunger 12andhas thereon apair of male molds 14. '.lhe two mold couples areidentical except Y for such dierenee in size or contour as are requiredfor operating upon widely differentfsizes or styles of soles, and adescription of. one couple will, therefore, bev sufficient tor anunderstanding` of the invention.

i vThe female mold is shaped approxnnately in accordance with the eccen-teur of the st le of sole u on which it is to o Jerat-e and 7 has alower recess to receive that portion of 4. the flesh side of the soleupon which the different sizes.

upper-attaching shoulder a is formed. The side wall 16 of this recess isformed with a suiticiently wide .curvature to receive the shoulderedportion of the largest sole of the range of sizes upon which it isintended that the saine molds shall operate, since it is the practice,for the salte of economy, to use the same vmolds inoperating upon anumber of Above the wall 1G of this recess is a u oblique wall or facewhich is arranged to engage the margin or feather of the sole outside ofthe shoulder a. and to bend it out of the plane of the sole toward thekgrain side in the molding operation. In a plane directly above theoblique wall iS there is formed, for purposes of thisin` vention, agroove or recess 2O which entends outwardly7 in the plane-in which thefeather ofy the sole is presented to the machine, and above this recessis a vertical wall 2Q which is adaptedto serve as a gage hy contact withthe edgefacec ot-the feather of the sole to determine the properlengthwise position of the sole in the mold and also to assist incentralizing it therein. The lower wall 24 of. the recess ,.20 extends,SQmQWh-it fel-H191 inwardly toward the center of the mold than thelocation of the wall 22, so that when the sole is presented to the moldthe outer edge portion of its feather Z) will rest upon the wall 2liadjacent to the oblique face 1S in proper position lor the beginning ofthe molding operation. Preferably, as shown, the height of the recessissoniewhat less than the width of the edge face of the Vfeather of thesole, so that a portion of the edge facie'will engage the limiting wall22 when the margin rests upon the wall Q4.

Fig. 3 illustrates the position of a sole as presented to the femalemold prior to the molding operation. rlhe drawings show a type of solewhich is so rounded that its ed ge face flares outwardly to some extentfrom the grain side, and which is channeled from its outer edge inwardlyby a cut inclined to the plane of the sole, so that the edge face andthe face of the feather on the iiesh side forni an acute angle; and itwill be noted that as the sole thus formed is presented in the positionillustrated in Fig. 25, the lower edge corner of the feather projectssome what within the recess 20. rthe male mold4 lll is beveled aroundits periphery, so that it applies its pressure farther inwardly than theextreme marginal edge of the sole, and in its downward movement 'itforces that portion of the sole bounded by the shoulder a into therecess within the wall l@ of the lower mold, thereby causing the feather7; to be bent upwardly by the action of the face 18, as illustrated inFig. et. lt will be seen that by reason of the shape of the male. moldit thus operates without any comprer action on the marginal edge portionor the feather of the sole.' lt will be evident that at the beginning ofthe molding operation the lower edge corner of the feather of the sole,because of the upward inclination of the lower face of the feather fromits edge inwardly, tends to spread outwardly as the upward bending of.the feather of the sole begins; but the edge is not interfered with11'). tiny llllllntlf SllClly 21S l() (,lll-t, COlllDl'GHlil Ordistortion by reason of the provision ol the recess Q0 in the lowermold. lt will further be seen that the lower edge corner of the featherwhich, as above described` rests initially upon the wall let of therecess 9.0, is tipped upwardly away from said wall in the later stagesof the molding operation, as illustrated in Fig. 4t, which assistsfurther in avoiding any compression or distortion at the edge.

Fig. 5 shows a portion of a sole as it appears after the moldingoperations have been performed thereon both at the toe end and at therear of the toe, the sole being sectioned in one location where thetoemolding operation has been performed and in another location wherethe sole has been operated upon by a machine of the progres lll) sivetype. It willpbe seen that the feather of the sole presents a uniformappearance both at the toe end andrat the rear of the toer Havingdescribed the. invention, what I clainias new and desireto secure byLetters Patent of the United States is -l.'In a machine for molding.turn shoek soles, a female mold having a face formed to extend inoblique relation t-o the plane of a sole therein for bending thefeather. of the sole out of said plane toward the grain side of thesole, and a co-operating male mold formed and arran ;ed to engage thegrain side of the sole without substantial compressing action at themarginal edge of the sole, said female mold being recessed adjacent toits oblique face in the plane in which the feather of the sole ispresented to the machine'to assist in avoiding compression or distortionof the marginal edge of the sole in t-he molding operation.

2. In. a machine for molding the toeends of, turn shoe soles, a femalemold formed to receive the toe end of a sole and provided with afaeeextending in oblique relation to the plane of a sole tierein for bendingthe feather ofthe sole out of said plane toward the grain side of thesole, and a eo-operating male .mold formedk and arrangedv to engage thegrain side of the sole without substantial compressing action at themarginal edge of the sole, said female n'iold'having above said obliqueface a wall arranged for positionino' engagement with the edge face ofthe sole when tlie sole is presented to the machine and having betweenthe lower end of said wall and its oblique face an outwardly extendingrecess to assist in avoiding compression or distortion of the marginaledge of the sole in the molding operation.

3. In a machine for molding the toe ends of turn shoe soles,a femalemold formed to i V`receive the toe end of a sole and provided with aface extending in oblique relation to the plane of a sole thereinforbending the .receive ythe toe end of a sole and provided with a faceextending in oblique relation to the plane of a sole therein for bendingthe feather of the sole out of said plane toward the grain side of thesole, and a cooperating male mold formed and arranged to engage rthegrain side of the sole without substantial compressi-on action atthemarginal edge of the sole, said female mold having adjacent to itsoblique face a Wall substantially parallel to the plane of the sole andarranged to support the marginal edge of the feather of the sole priorto the molding operation.

4. In a machine for molding the toe ends of turnshoe soles, a femalemold formed to eration.4

receive the toe end of a sole and provided with a face extending inoblique relation to the plane of a sole therein for bending thefeather-of the sole out of said plane toward the grain side of the sole,and a co-operating male mold formed and arranged to engage the grainside of the sole without substantial conqaressing action atl themarginal edge of the sole, said female mold liavingrabove said obliqueface a wallarranged for positioning engagement with the edge face of thesolefwhen the solo is presented to the machine and having between thelower end of said wall and its oblique face an outwardly extendingrecess the lower wall of which extends farther inwardly toward theVcenter of 'the mold than the location of said first-mentioned walltovsupport the marginal edge of the sole prior to the molding opthegrain side of the sole, and a co-operating male mold formed and arrangedto engagey the grain side" of the sole without substantial compressingaction at the marginal edge of the sole, said female mold having abovesaid oblique face a wall arranged for posithe sole when the sole ispresented to the machine and having between the lower end of said walland its oblique face an outwardly extending-recess to afford clearancefor the marginal edge of the sole in the molding operation, the height4of said recess being less tioning engagement with the edge face of.

thanthe width of the edge face of the` l feather of the sole.

v6.r In 'aimachine for molding the toe 4ends of turn shoe soles,a femalemold formed to HonMmAs s. MIRANDETTE.

